| P. Bosland, P. Brédy, S. Chel, G. Devanz, M. Luong CEA Saclay France
P. Craievich, G. Penco, M. Svandrlick, Sincrotrone Trieste Italy
M. Pedrozzi, W. Gloor, PSI Switzerland, A. Anghel EPFL-CRPP Switzerland
E. Chiaveri, R. Losito, O. Aberle, S. Calatroni CERN Switzerland
P. Marchand, SOLEIL Synchrotron SOLEIL France
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Two identical cryomodules Super-3HC have been installed in ELETTRA and SLS since mid of year 2002. For both machines these third harmonic superconducting systems, operating in bunch lengthening mode, improve performances in term of stability and lifetime.
The general design of the cryomodule was demonstrated to reach very tight specifications for HOMs damping, tuning resolution and maximum tuning range. Goals for accelerating fields, cryogenic losses, and vacuum were also reached with large margins. At ELETTRA some technological problems delayed for some months the complete system operation, whereas the SLS unit has caused no direct interlock trip since the end of the commissioning.
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